6 Chrome-coated steel sheets; tin-coated steel sheets; pre-coated steel sheets; cold rolled steel sheets; electrolytic galvanized steel coil; hot-dip galvanized steel sheets and strip; electrolytic tin plate in strip, sheets and roll form; steel pipes and tubes; building panels of metal; galvanized steel sheets; zinc-coated steel sheets; steel in the form of sheets, plates, foils and coils